Adsorption Moving Device and Detection Method for Ultrasonic Detection of Wind Turbine Tower Arrays

Abstract

The present invention discloses an adsorption and moving device and a detection method for ultrasonic detection of a wind turbine tower array, comprising: a detection component, including an installation box, an ultrasonic non-destructive detector body is arranged on the installation box, the ultrasonic non-destructive detector body is connected with a probe through a wire, and the probe is used to contact the tower body for detection; a fixing device for fixing the probe; a connecting device for driving the probe to move away from and close to the installation box; a guiding device arranged on the tower body, and the installation box is slidably connected with the guiding device; an angle adjusting device for adjusting the angle of the probe; a pushing device for pushing the angle adjusting device to move in the horizontal direction; a traction device connected with the pushing device. This device and method have the characteristics of high detection efficiency, time saving and labor saving.

Description

Technical Field

[0001] The present invention belongs to the technical field of wind turbine tower detection, and relates to an adsorption moving device and a detection method for ultrasonic detection of a wind turbine tower array. Background Art

[0002] A wind turbine is a power device that converts wind energy into mechanical work, drives a rotor to rotate with the mechanical work, and finally outputs alternating current. A wind turbine generally consists of components such as a wind wheel, a generator (including devices), a yaw device (tail fin), a tower, a speed limit safety mechanism, and an energy storage device.

[0003] During the operation of a wind turbine, the tower not only bears the huge gravity of the blades and the generator set, but also is affected by the vibration generated by the rotation of the blades and the generator, as well as the lateral thrust of the wind acting on the blades. Therefore, the tower is subjected to the combined action of complex bending moments, torques, and shear forces. The tower is usually designed and manufactured modularly and processed by forms such as welding or flange connection. There are natural defects such as air bubbles or microcracks inside the material of the tower, as well as weld cracks or fatigue cracks caused by stress concentration at the connection. Under the action of the above-mentioned huge bending moments, torques, and shear forces, these cracks are extremely easy to expand. If not diagnosed and discovered in time, it may cause the failure of the tower material, and even cause the overall collapse of the wind turbine, resulting in serious economic losses and social impacts, and at the same time forming a huge safety hazard. Early diagnosis and discovery of crack defects inside the wind turbine tower helps to avoid later social and economic losses.

[0004] At present, the method for detecting the wind turbine tower generally means that the detector crawls along the surface of the tower with the help of auxiliary equipment such as a large crane, a sling, a safety rope, and a hanging basket, and uses a handheld ultrasonic non-destructive testing device to detect the tower piece by piece, diagnose the fatigue damage state and degree of the internal material of the tower, and decide whether professional maintenance is needed. The safety detection using such special equipment can detect early subtle cracks inside the tower and take remedial measures as early as possible, thereby effectively avoiding major economic losses.

[0005] However, since the tower is generally more than 100 meters high, the detector has to carry out the detection operation in a high-altitude dangerous environment, which is not only laborious but also has low detection efficiency. Therefore, we propose an adsorption moving device and a detection method for ultrasonic detection of a wind turbine tower array. Summary of the Invention

[0006] The purpose of the present invention is to overcome the above-mentioned disadvantages of the prior art, and provide an adsorption moving device and a detection method for ultrasonic detection of a wind turbine tower array, which have the characteristics of high detection efficiency, time saving, and labor saving.

[0007] To achieve the above object, the adsorption and moving device for ultrasonic detection of a wind turbine tower array of the present invention comprises:

[0008] A detection component, including an installation box, on which an ultrasonic non-destructive detector body is provided. The ultrasonic non-destructive detector body is connected with a probe through a wire, and the tower body is detected by contacting the probe with the tower body;

[0009] A fixing device for fixing the probe;

[0010] A connecting device for driving the probe to move away from and close to the installation box;

[0011] A guiding device, which is arranged on the tower body, and the installation box is slidably connected with the guiding device;

[0012] An angle adjusting device for adjusting the angle of the probe;

[0013] A pushing device for pushing the angle adjusting device to move in the horizontal direction;

[0014] A traction device, which is connected with the pushing device.

[0015] The connecting device includes an electromagnet block arranged on the installation box. Both ends of the right side of the installation box are slidably connected with guide rods. The right ends of the two guide rods are connected by an iron plate. Among them, the electromagnet block faces the iron plate, and a first spring is sleeved on the outer side of the guide rod. The first spring is arranged between the iron plate and the installation box.

[0016] The fixing device includes two connecting blocks, which are fixed on the right side of the iron plate, and sleeves are arranged on both connecting blocks. Among them, the two sleeves are located between the two connecting blocks, and connecting rods are inserted into both sleeves. Among them, fixing blocks are arranged at the free ends of the two connecting rods. To improve the fixing effect on the probe, anti-slip pads in contact with the probe are arranged on the opposite sides of the two fixing blocks, and second springs for connecting with the connecting blocks are arranged on the fixing blocks.

[0017] The guiding device includes an installation rod fittingly installed on the tower body. A first sliding groove and a second sliding groove are arranged on the installation rod, and the first sliding groove and the second sliding groove are distributed in a cross shape.

[0018] A connecting frame is arranged on the installation box, and a slider slidably connected with both the first sliding groove and the second sliding groove is arranged on the connecting frame.

[0019] The angle adjusting device includes a rotating shaft arranged at the bottom of the installation box. The rotating shaft is rotatably connected with an installation frame through a bearing, and a motor is arranged on the installation frame. The output shaft of the motor is connected with the rotating shaft.

[0020] The driving device includes a base and a traction device. The traction device is connected to the top of the base, and a third spring is connected between the base and the mounting frame.

[0021] An electric telescopic rod is provided on the right side of the mounting box. The output end of the electric telescopic rod is connected to a movable block, and the movable block faces the tower body.

[0022] The detection method of the adsorption and moving device for ultrasonic detection of a wind turbine tower array according to the present invention includes the following steps:

[0023] 1) Drive the movable block away from the mounting box through the electric telescopic rod until it contacts the tower body. At this time, drive the rotating shaft to rotate through the motor, so that the mounting box rotates, and then the electric telescopic rod drives the movable block to fit the tower body. At this time, the inclination angle of the mounting box is the same as the angle of the tower body, so that the probe faces the tower body.

[0024] 2) Drive the movable block to retract through the electric telescopic rod and separate it from the tower body. Then, slide the slider into the first sliding groove and the second sliding groove, and connect the traction device to the base to move the base upward. When the base moves upward, the mounting frame and the mounting box are relatively fixed, and the base is guided by the slider to keep moving vertically.

[0025] 3) When moving to the position to be detected, cut off the power supply of the electromagnet block. Under the elastic force of the first spring, drive the iron plate and the probe to move, so that the probe contacts the tower body for detection.

[0026] 4) When continuing to move and no longer need to detect, energize the electromagnet block, so that the adsorption force of the electromagnet block on the iron plate is greater than the elastic force of the first spring, and then drive the iron plate and the probe to move away from the tower body, so that the probe disengages from the tower body.

[0027] The present invention has the following beneficial effects:

[0028] When the adsorption and moving device for ultrasonic detection of a wind turbine tower array and the detection method according to the present invention are specifically operated, drive the rotating shaft to rotate through the motor, so that the inclination angle of the mounting box is the same as the angle of the tower body, so that the probe faces the tower body. In this way, the detection accuracy is higher when detecting the current conical tower body; by sliding the slider into the first sliding groove and the second sliding groove and connecting the traction device to the base, when the base moves upward, the mounting frame and the mounting box are relatively fixed, and the base is guided by the slider to keep moving vertically. As the probe moves upward continuously, the third spring extends continuously to ensure that the slider slides in the first sliding groove and the second sliding groove. In this way, when detection is required, only the probe needs to move to make the probe contact the tower body for detection, with high detection efficiency, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of the present invention;

[0030] Figure 2 Schematic structural diagram of the detection component;

[0031] Figure 3 Schematic structural diagram of the guiding device;

[0032] Figure 4 Schematic structural diagram of the fixing device.

[0033] Among them, 1 is the installation box, 2 is the ultrasonic non-destructive detector body, 3 is the probe, 4 is the electromagnet block, 5 is the guide rod, 6 is the iron plate, 7 is the first spring, 8 is the connecting block, 9 is the sleeve, 10 is the connecting rod, 11 is the fixing block, 12 is the anti-slip pad, 13 is the second spring, 14 is the rotating shaft, 15 is the mounting bracket, 16 is the motor, 17 is the base, 18 is the traction device, 19 is the third spring, 20 is the mounting rod, 21 is the first chute, 22 is the second chute, 23 is the slider, 24 is the connecting frame, 25 is the electric telescopic rod, and 26 is the movable block. Detailed implementation manners

[0034] In order to enable those skilled in the art of the present technology to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments, and are not intended to limit the scope of the present invention disclosure. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessarily confusing the concepts disclosed in the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0035] The schematic structural diagrams according to the disclosed embodiments of the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and for the purpose of clear expression, some details are enlarged and some details may be omitted. The shapes of various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are only exemplary. In practice, there may be deviations due to manufacturing tolerances or technical limitations, and those skilled in the art can design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0036] Referring to Figures 1 to 4 , the adsorption and movement device for ultrasonic detection of wind turbine tower arrays according to the present invention includes:

[0037] A detection component, including an installation box 1, on which an ultrasonic non-destructive detector body 2 is provided. The ultrasonic non-destructive detector body 2 is connected with a probe 3 through a wire, and the probe 3 contacts the tower body for detection. The ultrasonic non-destructive detector body 2 transmits the detected information to the mobile terminal;

[0038] Fixing device, which is used to fix the probe 3;

[0039] Connecting device, which is used to drive the probe 3 away from and close to the installation box 1;

[0040] Guiding device, which is arranged on the tower body, and the installation box 1 is slidably connected with the guiding device;

[0041] Angle adjusting device, which is used to adjust the angle of the probe 3. Since the current tower bodies are all conical cylinder structures, it is necessary for the probe 3 to face the tower body directly, so that the detection accuracy is higher when in contact;

[0042] Pushing device, which is used to push the angle adjusting device to move in the horizontal direction;

[0043] Traction device 18, which is connected with the pushing device.

[0044] The connecting device includes an electromagnet block 4 arranged on the installation box 1. Both ends of the right side of the installation box 1 are slidably connected with guide rods 5. The right ends of the two guide rods 5 are connected by an iron plate 6. Among them, the electromagnet block 4 faces the iron plate 6. A first spring 7 is sleeved on the outer side of the guide rod 5. The first spring 7 is arranged between the iron plate 6 and the installation box 1. When the electromagnet block 4 is energized, the adsorption force of the electromagnet block 4 on the iron plate 6 is greater than the elastic force of the first spring 7, so that the iron plate 6 moves towards the direction close to the electromagnet block 4.

[0045] The fixing device includes two connecting blocks 8. The two connecting blocks 8 are fixed on the right side of the iron plate 6, and sleeves 9 are arranged on both connecting blocks 8. Among them, the two sleeves 9 are located between the two connecting blocks 8. Connecting rods 10 are inserted into both sleeves 9. Among them, fixing blocks 11 are arranged at the free ends of the two connecting rods 10. To improve the fixing effect on the probe 3, anti-slip pads 12 in contact with the probe 3 are arranged on the opposite sides of the two fixing blocks 11. A second spring 13 connected with the connecting block 8 is arranged on the fixing block 11. Through the elastic force of the second spring 13, it is convenient to fix the probe 3. In this way, when the iron plate 6 moves, the probe 3 can move along.

[0046] The guiding device includes an installation rod 20 fitted on the tower body. A first chute 21 and a second chute 22 are arranged on the installation rod 20. The first chute 21 and the second chute 22 are distributed in a cross shape. A connecting frame 24 is arranged on the installation box 1. A slider 23 slidably connected with both the first chute 21 and the second chute 22 is arranged on the connecting frame 24, which is used to guide the movement of the probe 3.

[0047] The angle adjustment device includes a rotating shaft 14 provided at the bottom of the mounting box 1. The rotating shaft 14 is rotatably connected to the mounting frame 15 through a bearing. A motor 16 is provided on the mounting frame 15. The output shaft of the motor 16 is connected to the rotating shaft 14. By driving the rotating shaft 14 to rotate by the motor 16, the mounting box 1 rotates, thereby driving the probe 3 to change the angle.

[0048] The pushing device includes a base 17 and a traction device 18. The traction device 18 is connected to the top of the base 17. A third spring 19 is connected between the base 17 and the mounting frame 15. Since when the base 17 moves vertically, the probe 3 will move farther and farther away from the tower body of the conical cylinder structure. To ensure that the distance between the probe 3 and the tower body is the same, the third spring 19 is provided. When the base 17 is moved upward by the traction device 18, the mounting frame 15 and the mounting box 1 are relatively fixed and guided by the slider 23, so that the base 17 can maintain vertical movement. As the probe 3 moves upward continuously, the third spring 19 extends continuously to ensure that the slider 23 slides in the first chute 21 and the second chute 22.

[0049] Refer to Figures 1 to 2 , an electric telescopic rod 25 is provided on the right side of the mounting box 1. The output end of the electric telescopic rod 25 is connected with a movable block 26. The movable block 26 faces the tower body. By driving the movable block 26 to move to the side away from the mounting box 1 by the electric telescopic rod 25 until it contacts the tower body. At this time, by driving the rotating shaft 14 to rotate by the motor 16, the movable block 26 is made to fit the tower body, which can play a role of comparison and facilitate quickly adjusting the angle of the mounting box 1.

[0050] The detection method of the adsorption and moving device for ultrasonic detection of a wind turbine tower array according to the present invention includes the following steps:

[0051] 1) Drive the movable block 26 away from the mounting box 1 by the electric telescopic rod 25 until it contacts the tower body. At this time, drive the rotating shaft 14 to rotate by the motor 16, so that the mounting box 1 rotates, and then the electric telescopic rod 25 drives the movable block 26 to fit the tower body. At this time, the inclination angle of the mounting box 1 is the same as the angle of the tower body, so that the probe 3 faces the tower body directly;

[0052] 2) Drive the movable block 26 to retract by the electric telescopic rod 25 and separate it from the tower body. Then, make the slider 23 slide and fit with the first chute 21 and the second chute 22, and connect the traction device 18 with the base 17 to move the base 17 upward. When the base 17 moves upward, the mounting frame 15 and the mounting box 1 are relatively fixed and guided by the slider 23, so that the base 17 maintains vertical movement. As the probe 3 moves upward continuously, the third spring 19 extends continuously to ensure that the slider 23 slides in the first chute 21 and the second chute 22;

[0053] 3) When it moves to the position to be detected, power off the electromagnet block 4. Under the elastic force of the first spring 7, drive the iron plate 6 and the probe 3 to move, so that the probe 3 contacts the tower body for detection;

[0054] 4) When it continues to move and detection is not required, then power on the electromagnet block 4, so that the adsorption force of the electromagnet block 4 on the iron plate 6 is greater than the elastic force of the first spring 7, and then make the iron plate 6 and the probe 3 move away from the tower body, so that the probe 3 disengages from the tower body.

[0055] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adsorption and moving device for ultrasonic inspection of a wind turbine tower array, characterized in that, Comprising: A detection component, including an installation box (1), an ultrasonic nondestructive detector body (2) is arranged on the installation box (1), the ultrasonic nondestructive detector body (2) is connected with a probe (3) through a wire, and the tower body is detected by contacting the probe (3); A fixing device for fixing the probe (3); A connecting device for driving the probe (3) to move away from and close to the installation box (1); A guiding device is arranged on the tower body, and the installation box (1) is slidably connected with the guiding device; An angle adjusting device for adjusting the angle of the probe (3); A pushing device for pushing the angle adjusting device to move in the horizontal direction; A traction device (18), and the traction device (18) is connected with the pushing device; The angle adjusting device includes a rotating shaft (14) arranged at the bottom of the installation box (1), the rotating shaft (14) is rotatably connected with an installation frame (15) through a bearing, a motor (16) is arranged on the installation frame (15), and an output shaft of the motor (16) is connected with the rotating shaft (14); The pushing device includes a base (17) and a traction device (18), the traction device (18) is connected with the top of the base (17), and a third spring (19) is connected between the base (17) and the installation frame (15); An electric telescopic rod (25) is arranged on the right side of the installation box (1), an output end of the electric telescopic rod (25) is connected with a movable block (26), and the movable block (26) faces the tower body; The guiding device includes an installation rod (20) fittingly installed on the tower body, a first sliding groove (21) and a second sliding groove (22) are arranged on the installation rod (20), and the first sliding groove (21) and the second sliding groove (22) are distributed in a cross-shaped intersection; A connecting frame (24) is arranged on the installation box (1), and a slider (23) slidably connected with both the first sliding groove (21) and the second sliding groove (22) is arranged on the connecting frame (24).

2. The adsorption and moving device for ultrasonic inspection of a wind turbine tower array according to claim 1, wherein The connecting device includes an electromagnet block (4) arranged on the installation box (1), guide rods (5) are slidably connected to both ends on the right side of the installation box (1), the right ends of the two guide rods (5) are connected through an iron plate (6), wherein the electromagnet block (4) faces the iron plate (6), and a first spring (7) is sleeved on the outer side of the guide rod (5), and the first spring (7) is arranged between the iron plate (6) and the installation box (1).

3. The adsorption and moving device for ultrasonic inspection of a wind turbine tower array according to claim 2, wherein, The fixing device includes two connecting blocks (8), the two connecting blocks (8) are fixed on the right side of the iron plate (6), sleeves (9) are arranged on both the two connecting blocks (8), wherein the two sleeves (9) are located between the two connecting blocks (8), connecting rods (10) are inserted into both the two sleeves (9), wherein fixing blocks (11) are arranged at free ends of the two connecting rods (10), in order to improve the fixing effect on the probe (3), anti-slip pads (12) contacting the probe (3) are arranged on opposite sides of the two fixing blocks (11), and second springs (13) connecting with the connecting blocks (8) are arranged on the fixing blocks (11).

4. A detection method for the adsorption and movement device used in the ultrasonic detection of a wind turbine tower array according to claim 1, characterized in that, Including the following steps: 1) Drive the movable block (26) away from the mounting box (1) through the electric telescopic rod (25) until it contacts the tower body. At this time, drive the rotating shaft (14) to rotate through the motor (16), so that the mounting box (1) rotates, and then the electric telescopic rod (25) drives the movable block (26) to fit the tower body. At this time, the inclination angle of the mounting box (1) is the same as that of the tower body, so that the probe (3) faces the tower body directly; 2) Drive the movable block (26) to retract through the electric telescopic rod (25) and separate it from the tower body. Then, make the slider (23) slide and fit with the first chute (21) and the second chute (22), and connect the traction device (18) to the base (17). Move the base (17) upward. When the base (17) moves upward, the mounting frame (15) and the mounting box (1) are relatively fixed and guided by the slider (23), so that the base (17) moves vertically; 3) When moving to the position to be detected, cut off the power supply of the electromagnet block (4). Under the elastic force of the first spring (7), drive the iron plate (6) and the probe (3) to move, so that the probe (3) contacts the tower body for detection; 4) When continuing to move and no longer need to detect, then energize the electromagnet block (4), so that the adsorption force of the electromagnet block (4) on the iron plate (6) is greater than the elastic force of the first spring (7), and then drive the iron plate (6) and the probe (3) to move away from the tower body, so that the probe (3) disengages from the tower body.

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